Whitch pair of undefined term is used to define the term parall lines

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

Which statement accurately explains whether a reflection over the y axis and a 270° counterclockwise rotation would map figure acb onto itself?

Which is an x-intercept of the graphed function? (0, 4) (–1, 0) (4, 0) (0, –1)